AN Prior was a philosopher who did a lot of work on the philosophy of time and on tense logics in particular.
One thing that was neat about him was that he thought it was silly to ask questions about time like, "is time like a snake biting its own tail?" instead he thought we should ask ourselves whether
Fp Pp is an axiom of the correct tense logic.
Similarly, he would say not to ask yourself if moments in time are densely arranged like points on the number line. Ask yourself if
Fp FFp is an axiom of the correct tense logic.
This is sort of the opposite of a major revolution in modal logic, where Saul Kripke was all, "Don't ask yourself if
p []<>P is an axiom of the correct modal logic, ask yourself whether the accessibility relation for possible worlds is symmetric (i.e. if x is possible relative to y, then y is possible relative to x)."
So, yeah, we can talk about AN Prior and his philosophy of time if people want.